3v4l.org

run code in 200+ php & hhvm versions
<?php print_r(strtotime("Y-m-01 00:00:00"));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bIkGv
function name:  (null)
number of ops:  7
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   INIT_FCALL                                               'print_r'
         1        INIT_FCALL                                               'strtotime'
         2        SEND_VAL                                                 'Y-m-01+00%3A00%3A00'
         3        DO_ICALL                                         $0      
         4        SEND_VAR                                                 $0
         5        DO_ICALL                                                 
         6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0